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When printing at 150 lpi, traps are usually between 1/150 and 1/300 inch (0.48 pt and 0.24 pt, 0.16 mm and 0.08 mm). These values are usually multiplied by 1.5 or 2 when one of the colors is black. The trap is not visible since the lighter color is spread underneath the—almost—opaque black.
The global spread of the printing press began with the invention of the printing press with movable type by Johannes Gutenberg in Mainz, Germany c. 1439. [1] Western printing technology was adopted in all world regions by the end of the 19th century, displacing the manuscript and block printing .
Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
The printing press, some may argue, is not a part of print culture, but had a substantial impact upon the development of print culture through the times. The printing press brought uniform copies and efficiency in print. It allowed a person to make a living from writing. Most importantly, it spread print throughout society.
Multiplexing : the macrostamp: the main drawback of microcontact printing for biomedical application is that it is not possible to print different molecules with one stamp. To print different (bio)molecules in one step, a new concept is proposed : the macrostamp. It is a stamp composed of dots. The space between the dots corresponds to the ...
A rotary printing press is a printing press in which the images to be printed are curved around a cylinder. Printing can be done on various substrates, including paper, cardboard, and plastic. Printing can be done on various substrates, including paper, cardboard, and plastic.
Printing press, engraving by W Lowry after John Farey Jr., 1819. The working of the printing process depends on the type of press used, as well as any of its associated technologies (which varied by time period). Hand presses generally required two people to operate them: one to ink the type, the other to work the press.
The invention of the printing press revolutionized communication and book production, leading to the spread of knowledge. [106] Printing was rapidly spread from Germany by emigrating German printers, but also by foreign apprentices returning home. A printing press was built in Venice in 1469, and by 1500 the city had 417 printers.